1// (C) Copyright John Maddock 2001.
2// (C) Copyright Jens Maurer 2001.
3// Use, modification and distribution are subject to the
4// Boost Software License, Version 1.0. (See accompanying file
5// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6
7// See http://www.boost.org for most recent version.
8
9// config for libstdc++ v3
10// not much to go in here:
11
12#define BOOST_GNU_STDLIB 1
13
14#ifdef __GLIBCXX__
15#define BOOST_STDLIB "GNU libstdc++ version " BOOST_STRINGIZE(__GLIBCXX__)
16#else
17#define BOOST_STDLIB "GNU libstdc++ version " BOOST_STRINGIZE(__GLIBCPP__)
18#endif
19
20#if !defined(_GLIBCPP_USE_WCHAR_T) && !defined(_GLIBCXX_USE_WCHAR_T)
21# define BOOST_NO_CWCHAR
22# define BOOST_NO_CWCTYPE
23# define BOOST_NO_STD_WSTRING
24# define BOOST_NO_STD_WSTREAMBUF
25#endif
26
27#if defined(__osf__) && !defined(_REENTRANT) \
28 && ( defined(_GLIBCXX_HAVE_GTHR_DEFAULT) || defined(_GLIBCPP_HAVE_GTHR_DEFAULT) )
29// GCC 3 on Tru64 forces the definition of _REENTRANT when any std lib header
30// file is included, therefore for consistency we define it here as well.
31# define _REENTRANT
32#endif
33
34#ifdef __GLIBCXX__ // gcc 3.4 and greater:
35# if defined(_GLIBCXX_HAVE_GTHR_DEFAULT) \
36 || defined(_GLIBCXX__PTHREADS) \
37 || defined(_GLIBCXX_HAS_GTHREADS) \
38 || defined(_WIN32) \
39 || defined(_AIX) \
40 || defined(__HAIKU__)
41 //
42 // If the std lib has thread support turned on, then turn it on in Boost
43 // as well. We do this because some gcc-3.4 std lib headers define _REENTANT
44 // while others do not...
45 //
46# define BOOST_HAS_THREADS
47# else
48# define BOOST_DISABLE_THREADS
49# endif
50#elif defined(__GLIBCPP__) \
51 && !defined(_GLIBCPP_HAVE_GTHR_DEFAULT) \
52 && !defined(_GLIBCPP__PTHREADS)
53 // disable thread support if the std lib was built single threaded:
54# define BOOST_DISABLE_THREADS
55#endif
56
57#if (defined(linux) || defined(__linux) || defined(__linux__)) && defined(__arm__) && defined(_GLIBCPP_HAVE_GTHR_DEFAULT)
58// linux on arm apparently doesn't define _REENTRANT
59// so just turn on threading support whenever the std lib is thread safe:
60# define BOOST_HAS_THREADS
61#endif
62
63#if !defined(_GLIBCPP_USE_LONG_LONG) \
64 && !defined(_GLIBCXX_USE_LONG_LONG)\
65 && defined(BOOST_HAS_LONG_LONG)
66// May have been set by compiler/*.hpp, but "long long" without library
67// support is useless.
68# undef BOOST_HAS_LONG_LONG
69#endif
70
71// Apple doesn't seem to reliably defined a *unix* macro
72#if !defined(CYGWIN) && ( defined(__unix__) \
73 || defined(__unix) \
74 || defined(unix) \
75 || defined(__APPLE__) \
76 || defined(__APPLE) \
77 || defined(APPLE))
78# include <unistd.h>
79#endif
80
81#if defined(__GLIBCXX__) || (defined(__GLIBCPP__) && __GLIBCPP__>=20020514) // GCC >= 3.1.0
82# define BOOST_STD_EXTENSION_NAMESPACE __gnu_cxx
83# define BOOST_HAS_SLIST
84# define BOOST_HAS_HASH
85# define BOOST_SLIST_HEADER <ext/slist>
86# if !defined(__GNUC__) || __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
87# define BOOST_HASH_SET_HEADER <ext/hash_set>
88# define BOOST_HASH_MAP_HEADER <ext/hash_map>
89# else
90# define BOOST_HASH_SET_HEADER <backward/hash_set>
91# define BOOST_HASH_MAP_HEADER <backward/hash_map>
92# endif
93#endif
94
95//
96// Decide whether we have C++11 support turned on:
97//
98#if defined(__GXX_EXPERIMENTAL_CXX0X__) || (__cplusplus >= 201103)
99# define BOOST_LIBSTDCXX11
100#endif
101//
102// Decide which version of libstdc++ we have, normally
103// stdlibc++ C++0x support is detected via __GNUC__, __GNUC_MINOR__, and possibly
104// __GNUC_PATCHLEVEL__ at the suggestion of Jonathan Wakely, one of the stdlibc++
105// developers. He also commented:
106//
107// "I'm not sure how useful __GLIBCXX__ is for your purposes, for instance in
108// GCC 4.2.4 it is set to 20080519 but in GCC 4.3.0 it is set to 20080305.
109// Although 4.3.0 was released earlier than 4.2.4, it has better C++0x support
110// than any release in the 4.2 series."
111//
112// Another resource for understanding stdlibc++ features is:
113// http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#manual.intro.status.standard.200x
114//
115// However, using the GCC version number fails when the compiler is clang since this
116// only ever claims to emulate GCC-4.2, see https://svn.boost.org/trac/boost/ticket/7473
117// for a long discussion on this issue. What we can do though is use clang's __has_include
118// to detect the presence of a C++11 header that was introduced with a specific GCC release.
119// We still have to be careful though as many such headers were buggy and/or incomplete when
120// first introduced, so we only check for headers that were fully featured from day 1, and then
121// use that to infer the underlying GCC version:
122//
123#ifdef __clang__
124
125#if __has_include(<experimental/any>)
126# define BOOST_LIBSTDCXX_VERSION 50100
127#elif __has_include(<shared_mutex>)
128# define BOOST_LIBSTDCXX_VERSION 40900
129#elif __has_include(<ext/cmath>)
130# define BOOST_LIBSTDCXX_VERSION 40800
131#elif __has_include(<scoped_allocator>)
132# define BOOST_LIBSTDCXX_VERSION 40700
133#elif __has_include(<typeindex>)
134# define BOOST_LIBSTDCXX_VERSION 40600
135#elif __has_include(<future>)
136# define BOOST_LIBSTDCXX_VERSION 40500
137#elif __has_include(<ratio>)
138# define BOOST_LIBSTDCXX_VERSION 40400
139#elif __has_include(<array>)
140# define BOOST_LIBSTDCXX_VERSION 40300
141#endif
142//
143// GCC 4.8 and 9 add working versions of <atomic> and <regex> respectively.
144// However, we have no test for these as the headers were present but broken
145// in early GCC versions.
146//
147#endif
148
149#if defined(__SUNPRO_CC) && (__SUNPRO_CC >= 0x5130) && (__cplusplus >= 201103L)
150//
151// Oracle Solaris compiler uses it's own verison of libstdc++ but doesn't
152// set __GNUC__
153//
154#define BOOST_LIBSTDCXX_VERSION 40800
155#endif
156
157#if !defined(BOOST_LIBSTDCXX_VERSION)
158# define BOOST_LIBSTDCXX_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
159#endif
160
161// C++0x headers in GCC 4.3.0 and later
162//
163#if (BOOST_LIBSTDCXX_VERSION < 40300) || !defined(BOOST_LIBSTDCXX11)
164# define BOOST_NO_CXX11_HDR_ARRAY
165# define BOOST_NO_CXX11_HDR_TUPLE
166# define BOOST_NO_CXX11_HDR_UNORDERED_MAP
167# define BOOST_NO_CXX11_HDR_UNORDERED_SET
168# define BOOST_NO_CXX11_HDR_FUNCTIONAL
169#endif
170
171// C++0x headers in GCC 4.4.0 and later
172//
173#if (BOOST_LIBSTDCXX_VERSION < 40400) || !defined(BOOST_LIBSTDCXX11)
174# define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
175# define BOOST_NO_CXX11_HDR_FORWARD_LIST
176# define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
177# define BOOST_NO_CXX11_HDR_MUTEX
178# define BOOST_NO_CXX11_HDR_RATIO
179# define BOOST_NO_CXX11_HDR_SYSTEM_ERROR
180# define BOOST_NO_CXX11_SMART_PTR
181#else
182# define BOOST_HAS_TR1_COMPLEX_INVERSE_TRIG
183# define BOOST_HAS_TR1_COMPLEX_OVERLOADS
184#endif
185
186// C++0x features in GCC 4.5.0 and later
187//
188#if (BOOST_LIBSTDCXX_VERSION < 40500) || !defined(BOOST_LIBSTDCXX11)
189# define BOOST_NO_CXX11_NUMERIC_LIMITS
190# define BOOST_NO_CXX11_HDR_FUTURE
191# define BOOST_NO_CXX11_HDR_RANDOM
192#endif
193
194// C++0x features in GCC 4.6.0 and later
195//
196#if (BOOST_LIBSTDCXX_VERSION < 40600) || !defined(BOOST_LIBSTDCXX11)
197# define BOOST_NO_CXX11_HDR_TYPEINDEX
198# define BOOST_NO_CXX11_ADDRESSOF
199#endif
200
201// C++0x features in GCC 4.7.0 and later
202//
203#if (BOOST_LIBSTDCXX_VERSION < 40700) || !defined(BOOST_LIBSTDCXX11)
204// Note that although <chrono> existed prior to 4.7, "steady_clock" is spelled "monotonic_clock"
205// so 4.7.0 is the first truely conforming one.
206# define BOOST_NO_CXX11_HDR_CHRONO
207# define BOOST_NO_CXX11_ALLOCATOR
208#endif
209// C++0x features in GCC 4.8.0 and later
210//
211#if (BOOST_LIBSTDCXX_VERSION < 40800) || !defined(BOOST_LIBSTDCXX11)
212// Note that although <atomic> existed prior to gcc 4.8 it was largely unimplemented for many types:
213# define BOOST_NO_CXX11_HDR_ATOMIC
214# define BOOST_NO_CXX11_HDR_THREAD
215#endif
216// C++0x features in GCC 4.9.0 and later
217//
218#if (BOOST_LIBSTDCXX_VERSION < 40900) || !defined(BOOST_LIBSTDCXX11)
219// Although <regex> is present and compilable against, the actual implementation is not functional
220// even for the simplest patterns such as "\d" or "[0-9]". This is the case at least in gcc up to 4.8, inclusively.
221# define BOOST_NO_CXX11_HDR_REGEX
222#endif
223
224#if defined(__clang_major__) && ((__clang_major__ < 3) || ((__clang_major__ == 3) && (__clang_minor__ < 7)))
225// As of clang-3.6, libstdc++ header <atomic> throws up errors with clang:
226# define BOOST_NO_CXX11_HDR_ATOMIC
227#endif
228//
229// C++0x features in GCC 5.1 and later
230//
231#if (BOOST_LIBSTDCXX_VERSION < 50100) || !defined(BOOST_LIBSTDCXX11)
232# define BOOST_NO_CXX11_HDR_TYPE_TRAITS
233# define BOOST_NO_CXX11_HDR_CODECVT
234# define BOOST_NO_CXX11_ATOMIC_SMART_PTR
235# define BOOST_NO_CXX11_STD_ALIGN
236#endif
237
238#if defined(__has_include)
239#if !__has_include(<shared_mutex>)
240# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
241#elif __cplusplus <= 201103
242# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
243#endif
244#elif __cplusplus < 201402 || (BOOST_LIBSTDCXX_VERSION < 40900) || !defined(BOOST_LIBSTDCXX11)
245# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
246#endif
247
248//
249// Headers not present on Solaris with the Oracle compiler:
250#if defined(__SUNPRO_CC)
251#define BOOST_NO_CXX11_HDR_FUTURE
252#define BOOST_NO_CXX11_HDR_FORWARD_LIST
253#define BOOST_NO_CXX11_HDR_ATOMIC
254// shared_ptr is present, but is not convertible to bool
255// which causes all kinds of problems especially in Boost.Thread
256// but probably elsewhere as well.
257#define BOOST_NO_CXX11_SMART_PTR
258#endif
259
260#if (!defined(_GLIBCXX_HAS_GTHREADS) || !defined(_GLIBCXX_USE_C99_STDINT_TR1))
261 // Headers not always available:
262# ifndef BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
263# define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
264# endif
265# ifndef BOOST_NO_CXX11_HDR_MUTEX
266# define BOOST_NO_CXX11_HDR_MUTEX
267# endif
268# ifndef BOOST_NO_CXX11_HDR_THREAD
269# define BOOST_NO_CXX11_HDR_THREAD
270# endif
271# ifndef BOOST_NO_CXX14_HDR_SHARED_MUTEX
272# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
273# endif
274#endif
275
276#if (!defined(_GTHREAD_USE_MUTEX_TIMEDLOCK) || (_GTHREAD_USE_MUTEX_TIMEDLOCK == 0)) && !defined(BOOST_NO_CXX11_HDR_MUTEX)
277// Timed mutexes are not always available:
278# define BOOST_NO_CXX11_HDR_MUTEX
279#endif
280
281// --- end ---
282

source code of boost/boost/config/stdlib/libstdcpp3.hpp